Microstructural Investigations of Low Temperature Joining of Q&P Steels Using Ag Nanoparticles in Combination with Sn and SnAg as Activating Material (bibtex)

by S. Hausner, M. F.-X. Wagner, G. Wagner

@Article{Hausner2019,
  author    = {Hausner, S. and Wagner, M. F.-X. and Wagner, G.},
  title     = {Microstructural Investigations of Low Temperature Joining of Q{\&}P Steels Using Ag Nanoparticles in Combination with Sn and {SnAg} as Activating Material},
  journal   = {Applied Sciences},
  year      = {2019},
  volume    = {9},
  number    = {3},
  pages     = {539},
  month     = {feb},
  abstract  = {Quenching and partitioning (Q{\&}P) steels show a good balance between strength and
ductility due to a special heat treatment that allows to adjust a microstructure of martensite
with a fraction of stabilized retained austenite. The final heat treatment step is performed at low
temperatures. Therefore, joining of Q{\&}P steels is a big challenge. On the one hand, a low joining
temperature is necessary in order not to influence the adjusted microstructure; on the other hand,
high joint strengths are required. In this study, joining of Q{\&}P steels with Ag nanoparticles is
investigated. Due to the nano-effect, high-strength and temperature-resistant joints can be produced
at low temperatures with nanoparticles, which meets the contradictory requirements for joining
of Q{\&}P steels. In addition to the Ag nanoparticles, activating materials (SnAg and Sn) are used
at the interface to achieve an improved bonding to the steel substrate. The results show that the
activating materials play an important role in the successful formation of joints. Only with the
activating materials, can joints be produced. Due to the low joining temperature (max. 237 °C),
the microstructure of the Q{\&}P steel is hardly influenced.},
  doi       = {10.3390/app9030539},
  publisher = {{MDPI} {AG}},
}